From: Dimitri Fedrau <dimitri.fedrau@xxxxxxxxxxxx>
The driver defaults to smallest current limitation for safety reasons. Add
support for setting default current limitation via DT.
Signed-off-by: Dimitri Fedrau <dimitri.fedrau@xxxxxxxxxxxx>
---
drivers/power/supply/gpio-charger.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/power/supply/gpio-charger.c b/drivers/power/supply/gpio-charger.c
index 68212b39785beabfe5536a18fa15bc249f7b1eea..1c1fce6579464b61dbaf4125d0a91dc34c18c4d0 100644
--- a/drivers/power/supply/gpio-charger.c
+++ b/drivers/power/supply/gpio-charger.c
@@ -187,6 +187,8 @@ static int init_charge_current_limit(struct device *dev,
{
int i, len;
u32 cur_limit = U32_MAX;
+ bool set_def_limit;
+ u32 def_limit;
gpio_charger->current_limit_gpios = devm_gpiod_get_array_optional(dev,
"charge-current-limit", GPIOD_OUT_LOW);
@@ -220,6 +222,9 @@ static int init_charge_current_limit(struct device *dev,
if (len < 0)
return len;
+ set_def_limit = !device_property_read_u32(dev,
+ "charge-current-limit-default",
+ &def_limit);
for (i=0; i < gpio_charger->current_limit_map_size; i++) {
if (gpio_charger->current_limit_map[i].limit_ua > cur_limit) {
dev_err(dev, "charge-current-limit-mapping not sorted by current in descending order\n");
@@ -227,8 +232,16 @@ static int init_charge_current_limit(struct device *dev,
}
cur_limit = gpio_charger->current_limit_map[i].limit_ua;
+ if (set_def_limit && def_limit == cur_limit) {
+ set_charge_current_limit(gpio_charger, cur_limit);
+ return 0;
+ }
}
+ if (set_def_limit)
+ dev_warn(dev, "charge-current-limit-default %u not listed in charge-current-limit-mapping\n",
+ def_limit);
+
/* default to smallest current limitation for safety reasons */
len = gpio_charger->current_limit_map_size - 1;
set_charge_current_limit(gpio_charger,
--
2.39.5
